Filters: Collection: "ir_uspace"
| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 76 |
 |
Clayton, Dale H. | An experimental test of the effects of behavioral and immunological defenses against vectors: do they interact to protect birds from blood parasites? | Background: Blood-feeding arthropods can harm their hosts in many ways, such as through direct tissue damage and anemia, but also by distracting hosts from foraging or watching for predators. Blood-borne pathogens transmitted by arthropods can further harm the host. Thus, effective behavioral and im... | 2014-01-01 | |
| 77 |
 |
Clayton, Dale H. | Coevolutionary history of ecological replicates: comparing phylogenies of wing and body lice to Columbiform hosts | Phylogenies depict the history of speciation for groups of organisms. Comparing the phylogenies of interacting groups can reveal instances of tandem speciation, or "cospeciation" (Brooks and McLennan, 1991; Hoberg et al., 1997; Paterson and Gray, 1997). Understanding the conditions under which cosp... | Feather lice; Wing lice; Body lice; Cospeciation | 2003 |
| 78 |
 |
Shapiro, Michael D. | Turnover of sex chromosomes in the stickleback fishes (Gastrosteidae) | Diverse sex-chromosome systems are found in vertebrates, particularly in teleost fishes, where different systems can be found in closely related species. Several mechanisms have been proposed for the rapid turnover of sex chromosomes, including the transposition of an existing sex-determination gen... | Sex determination; Gasterosteus aculeatus; Gasterosteus wheatlandi; Pungitius pungitius; Culaea inconstans; Apeltes quadracus; Gasterosteidae | 2009-02-20 |
| 79 |
 |
Sekercioglu, Cagan | The effects of climate change on tropical birds | Birds are among the most widely studied organisms on earth and represent an important indicator group for learning about the effects of climate change - particularly in regard to the effects of climate change on tropical ecosystems. In this review, we assess the potential impacts of climate change o... | 2010-01-01 | |
| 80 |
 |
Torti, Sylvia D.; Coley, Phyllis D.; Kursar, Thomas A. | Causes and consequences of monodominance in tropical lowland forests | Tropical canopy dominance in lowland, well-drained forests by one plant species is a long-standing conundrum in tropical biology. Research now shows that dominance is not the result of one trait or mechanism. We suggest that the striking dominance of Gilbertiodendron dewevrei in the Ituri Forest of ... | Monodominance; Gilbertiodendron dewevrei; Ituri Forest; Understory | 2001 |
| 81 |
 |
Reitze, Arnold W. | BiofuelsSnake Oil for the Twenty-First Century | Congress should slash its subsidies for corn-based ethanol and focus its efforts on research and development efforts to advance the technologies needed to reduce our need for foreign petroleum. We should be working to lower the costs of cellulosic ethanol production as well as working on promisi... | 2008-12-01 | |
| 82 |
 |
Codding, Brian F. | Explaining prehistoric variation in the abundance of large prey: a zooarchaeological analysis of deer and rabbit hunting along the Pecho Coast of Central California | Three main hypotheses are commonly employed to explain diachronic variation in the relative abun dance of remains of large terrestrial herbivores: (1) large prey populations decline as a function of anthro pogenic overexploitation; (2 ) large prey tends to increase as a result of increasing social p... | Foraging; Resource depression; Prestige hunting; Paleoclimatic variability; Human behavioral ecology; Zooarchaeology; Central California | 2009-11-14 |
| 83 |
 |
Clayton, Dale H.; Rogers, Alan R. | Genetic analysis of lice supports direct contact between modern and archaic humans | Parasites can be used as unique markers to investigate host evolutionary history, independent of host data. Here we show that modern human head lice, Pediculus humanus, are composed of two ancient lineages, whose origin predates modern Homo sapiens by an order of magnitude (ca. 1.18 million years). | Pediculus humanus; Head lice; Molecular phylogeny; Phthirus | 2004 |
| 84 |
 |
Bastiani, Michael | Role of the cell surface in neuronal pathfinding | Perhaps the organ of the human body that evokes the most astonishment, and yet is the least understood, is our brain. From the coordination of simple movements, to consciousness and thought, the function of the nervous system relies on the establishment of trillions of precise connections among the... | Axon; molecular guidance code; growth cone | 1996 |
| 85 |
 |
Firmage, Edwin B. | MX:democracy, religion and the rule of law--my journey | This is my story of the defeat of the MX missile's proposed basing mode in the Great Basin of the West. Where to begin? I'm reflecting on cancer and MX at this moment. About journeys where we would not go but do. Beginnings are not easy, though the first verses of Genesis and John make them sound so... | Missile Experimental; Great Basin; Cold War | 2004 |
| 86 |
 |
Adler, Robert W. | Drought, Sustainability, and the Law | Researchers and responsible officials have made considerable progress in recent years in efforts to anticipate, plan for, and respond to drought. Some of those efforts are beginning to shift from purely reactive, relief-oriented measures to programs designed to prevent or to mitigate drought impacts... | 2010-07-15 | |
| 87 |
 |
Farmer, Colleen G. | New perspective on the origin of endothermy | A new hypothesis for the origin of endothermy in birds is discussed. I suggest extensive parental care provided the initial impetus for the evolution of endothermy. Among extant animals one of the most important functions of an endothermic metabolism is the incubation of embryos. Furthermore, I prop... | Endothermy; Parental care; Thermogenesis; Reproduction; Hormone; Aerobic capacity | 2001 |
| 88 |
 |
Farmer, Colleen G. | The pulmonary anatomy of alligator mississippiensis and its similarity to the avian respiratory system | Using gross dissections and computed tomography we studied the lungs of juvenile American alligators (Alligator mississippiensis). Our findings indicate that both the external and internal morphology of the lungs is strikingly similar to the embryonic avian respiratory system (lungs + air sacs). We... | 2012 | |
| 89 |
 |
Davidson, Diane W. | Comparative structure of harvester ant communities in arid Australia and North America | In the Australian arid zone, the species richness of ants is greater and that of mammalian granivores is less than in North American deserts. This study aimed to determine if the structure of harvester ant communities differs from that seen in North American deserts, focussing on differences relate... | Species; Rodents; Diversity | 1988 |
| 90 |
 |
Allen, Richardson; Deo, Milind D.; Isaacson, Alan E.; Keiter, Robert B.; Kessler, Christopher; Levey, Raymond; Oh, Kyeong Seok; Smith, Philip J.; Spinti, Jennifer P.; Uchitel, Kirsten; Alleman, David | A Technical, Economic, and Legal Assessment of North American Heavy Oil, Oil Sands, and Oil Shale Resources: In Response to Energy Policy Act of 2005 Section 369(p) | The purpose of this report is to assess unconventional North American resources, summarize current technologies for extracting and processing the resources, identify the issues which will affect the economic viability of various resource development schemes, evaluate the socioeconomic costs to commu... | 2007-09 | |
| 91 |
 |
Woodbury, Angus M.; Cottam, Clarence; Sugden, John W. | Annotated check-list of the birds of Utah | The following check-list is a by-product o f studies made by the writers since 1926 in gathering material for a work on The Birds of Utah which is now completed. The list includes four hundred three kinds of birds (species and subspecies) which are admitted to the actual state list and thirty-three ... | 1949-03 | |
| 92 |
 |
Woodbury, Angus M. | Birds of the Navajo Country | The Navajo country as covered in this paper lies in southeastern Utah and northeastern Arizona and is bounded on the north, west and south by the San Juan, Colorado, Little Colorado and Rio Puerco rivers and on the east by the Arizona-New Mexico state line. That part of the Navajo country lying in n... | 1945-03-01 | |
| 93 |
 |
Bartholomew, Keith A. | Integrating land use issues into transportation planning: scenario planning, bibliography | Over the past 15 years, land use-transportation scenario planning has become an increasingly common technique in regional and sub-regional planning processes. This study investigates the breadth of the technique and some of the themes that are emerging by reviewing 80 scenario planning projects from... | Architecture; Transportation, Planning; Land use, Planning | 2005-09-24 |
| 94 |
 |
Behle, William H. | Birds of pine valley mountain region, Southwestern Utah | It has long been a practice among ornithologists to study the distribution, variation, and ecological relationships of birds in areas characterized by diverse physiographic features. Such studies are motivated usually by the desire to aid in finding solutions for the many problems concerning the dis... | 1943-08-10 | |
| 95 |
 |
Hawkes, Kristen | Why hunter-gatherers work: An ancient version of the problem of public goods | From the abstract: People who hunt and gather for a living share some resources more widely than others. A favored hypothesis to explain the differential sharing is that giving up portions of large, unpredictable resources obligates others to return shares of them later, reducing everyone's variance... | Hunter-gatherer societies; Public goods | 2001-08 |